Oi (telecommunications)'s Slogans & Taglines

Oi (formerly Telemar) traces its origins to 1998, when the Brazilian government privatised the state-owned Telebrás system. Telemar Norte Leste S.A. was formed through the merger of 16 regional telephone companies in Brazil's Northeast and North regions, winning the privatisation auction for $3.434 billion. In 2007, the company rebranded from Telemar to Oi—a name chosen for its simplicity and universality across Portuguese, Spanish, and English. In 2009, Oi merged with Brasil Telecom and Copart to form CorpCo, creating Brazil's largest integrated telecommunications operator. After filing for judicial reorganisation (RJ) in 2016 due to massive debt, the company emerged in 2023 with a streamlined focus on fibre and mobile services. Today, Oi remains Brazil's largest fixed-line operator and the fourth-largest mobile carrier, serving millions of customers nationwide.

The brand's core products are telecommunications and digital services, including fixed-line telephony, mobile voice and data, fibre-optic broadband (FTTH), and enterprise solutions. Its portfolio spans residential and business internet, TV streaming, IoT connectivity, and wholesale network infrastructure.

From its earliest positioning as a regional fixed-line consolidator, Oi has evolved through the slogan "Oi, simples assim" ("Oi, simple as that") to a modern digital services provider. The brand's journey reflects a shift from post-privatisation infrastructure building to a streamlined, customer-centric telecommunications company navigating Brazil's competitive digital landscape.